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Finding the Fourth Proportional to 20,162.40, 30,239.28 and 6,303.84

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Solution

The fourth proportional to 20,162.40, 30,239.28 and 6,303.84 is: 9,454.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.40 : 30,239.28 = 6,303.84 : x
  2. Step 2: Convert to fraction form
    20,162.40/30,239.28 = 6,303.84/x
  3. Step 3: Cross multiply
    20,162.40x = 30,239.28 × 6,303.84
  4. Step 4: Simplify right side
    20,162.40x = 190,623,582.84
  5. Step 5: Solve for x
    x = 190,623,582.84/20,162.40
  6. Step 6: Final answer
    x = 9,454.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.